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Hydroquinone, also known as benzene-1,4-diol or quinol, is an aromatic organic compound that is a type of phenol, a derivative of benzene, having the chemical formula C 6 H 4 (OH) 2. It has two hydroxyl groups bonded to a benzene ring in a para position.
This page was last edited on 30 December 2018, at 23:15 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.
Hydroquinone is used to reduce the activated silver ions to metallic silver. During this process, hydroquinone is oxidized to quinone. All silver halide not activated by light or reduced by hydroquinone is removed, leaving a negative by deposited silver where the film had been struck by light.
Avarol is a hydroquinone first isolated from the Mediterranean marine sponge Dysidea avara 1974 [1] Avarol represented the first sesquiterpenoid with a rearranged drimane skeleton and its structure was established by standard analytical methods, chemical degradation and later by stereocontrolled synthesis.
Monobenzone, also called 4-(Benzyloxy)phenol and monobenzyl ether of hydroquinone (MBEH) is an organic chemical in the phenol family with chemical formula C 6 H 5 CH 2 OC 6 H 4 OH. [1] [2] It is used as a topical drug for medical depigmentation. [3] It is a colourless solid that is classified as the monobenzyl ether of hydroquinone.
The European Food Safety Authority (EFSA) and the United States Food and Drug Administration (FDA) [3] have evaluated TBHQ and determined that it is safe to consume at the concentration allowed in foods. [4]
1,4-Benzoquinone, commonly known as para-quinone, is a chemical compound with the formula C 6 H 4 O 2.In a pure state, it forms bright-yellow crystals with a characteristic irritating odor, resembling that of chlorine, bleach, and hot plastic or formaldehyde.
Shqip; සිංහල ... "It is synthesized from a mixture of toluene and 2,3,5-trimethyl-hydroquinone that reacts with isophytol to all-rac-alpha-tocopherol, using ...
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